Scopus İndeksli Yayınlar Koleksiyonu
Permanent URI for this collectionhttps://hdl.handle.net/20.500.12416/8651
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Article Citation - WoS: 1Citation - Scopus: 1Three Dimensional Theory of the Boundary Diffraction Wave(Elsevier Gmbh, 2019) Umul, Yusuf ZiyaThe line integral of the boundary diffraction wave theory, which yields the diffracted fields by an edge discontinuity, is obtained from the surface integral of the modified theory of physical optics. The line integral is evaluated by using the edge point method. The generalization of the integral is performed for curved edges. In this case the kernel is a function of two variable angles.Article Citation - WoS: 4Citation - Scopus: 4Boundary Diffraction Wave Theory Approach To Corner Diffraction(Springer, 2019) Umul, Yusuf ZiyaThe scattering process of plane waves by a discontinuous edge contour is studied with the three dimensional boundary diffraction wave theory. The edge and corner diffracted fields are obtained from the stationary phase and edge point evaluations of the line integral. A new corner diffraction coefficient is derived. The behaviors of the uniform edge and corner diffracted waves are investigated numerically.Article The Method of the Boundary Diffraction Wave for Impedance Surfaces(Elsevier, 2012) Umul, Yusuf ZiyaThe line integral of the boundary diffraction wave theory is extended for the diffraction process of waves by the impedance surfaces with edge discontinuities. With this aim, the exact diffraction field expression of Maliuzhinets is transformed into a line integral. The method is applied to the scattering problems of waves by a spherical reflector with edge discontinuity and the diffracted fields are evaluated asymptotically. The resultant expressions of the waves are examined numerically. (C) 2011 Elsevier B.V. All rights reserved.Article Citation - WoS: 5Citation - Scopus: 5Boundary Diffraction Wave Theory of Junctions Between Two Surfaces With Different Face Impedances(Elsevier Sci Ltd, 2012) Umul, Yusuf ZiyaThe line integral of the boundary diffraction wave theory is derived for the diffraction process of waves by a junction between two surfaces with different face impedances. The exact solution of Maliuzhinets is used with this aim. The resultant integral is applied to the diffraction of waves by a circular junction between two impedance surfaces. The results are examined numerically. (C) 2011 Elsevier Ltd. All rights reserved.Article Citation - WoS: 1Citation - Scopus: 1Boundary Diffraction Wave Theory of Resistive Surfaces With Edge Discontinuities(Elsevier, 2011) Umul, Yusuf ZiyaThe line integral of the boundary diffraction wave theory is derived by considering the exact diffracted fields of a resistive half-plane. The line integral is generalized for arbitrary resistive surface with edge discontinuity. The method is applied to the diffraction problem of waves by a convex resistive spherical reflector and the resultant field expressions are investigated numerically. (C) 2011 Elsevier B.V. All rights reserved.